Lack of good storyline.

I like movies that are aware of what they are selling... without [any] greater aspirations than to make people laugh and that's it.

It isn't all that great, actually. Really cheesy and very predicable of how certain scenes are gonna turn play out. However, I guess that's the charm of it all, because I would consider this one of my guilty pleasures.

All of these films share one commonality, that being a kind of emotional center that humanizes a cast of monsters.